Yeastar’s S100, S-Series VoIP PBX is designed with small and medium sized enterprises in mind. The S100 is a cost-effective business communication system with a base configuration of 100 users, 30 concurrent calls and can scale up to 200 users and 60 concurrent calls. The flexible S100 comes with support for analog ports, ISDN BRI, E1/T1/PRI, and GSM networks. Yeastar’s S-Series delivers impressive cost savings, productivity and efficiency improvements, while delivering power, performance, quality and peace of mind.

The S-Series features comprehensive auto provisioning, advanced plug and play capability, as well as an intuitive Metro UI driven by point-and-click configuration, accessible from any location. It works with SIP/IAX2, PSTN lines, ISDN BRI, E1/T1/PRI, and GSM/CDMA/3G. There are no hidden costs and licensing fees as all software and firmware.